03/31/15 2:04 pm

03/31/15 2:04 pm

The U.S., its negotiating partners and Iran were laboring to reach an agreement on the outlines of a final nuclear deal, diplomats said, but a senior U.S. official warned talks could drag past tonight’s deadline with a framework deal still elusive.

The day dawned with international negotiators still trying to reach a deal on the future of Iran's nuclear program. Tuesday is the nonbinding deadline for a deal. Amid talks, maneuvers and news bulletins, here are five indicators to help sort the clues to a possible accord in Lausanne, Switzerland:

The co-pilot allegedly responsible for last week’s Germanwings plane crash informed his flight training school he had suffered a “previous episode of severe depression,” Lufthansa said Tuesday after handing over further documents to Düsseldorf prosecutors.

U.S. News

The Department of Education made public for the first time on Tuesday a list of more than 500 colleges and universities the agency is concerned about and has placed under increased financial oversight.

World

The lead prosecutor in the trial of al Qaeda-affiliated militants charged in a 2010 terror attack was shot and killed by two motorcycle-riding gunmen in Uganda’s capital on Monday, in what police described as a well-planned assassination.

Business

Fast-food chain McDonald’s will experiment with round-the-clock Egg McMuffins and Hot Cakes at some San Diego area outlets, responding to customer demand and countering rivals such as Jack In The Box and Sonic.

Markets

U.S. regulators are zeroing in on Wall Street boardrooms as part of the government’s intensified scrutiny of the banking system, shifting from light-touch oversight of bank directors to regular and intense interactions.